| Mason City to Keene (New Hampshire) | 1,052.61 mi (1,694.01 km) |
| Mason City to Keizer (Oregon) | 1,477.56 mi (2,377.91 km) |
| Mason City to Keller (Texas) | 738.77 mi (1,188.93 km) |
| Mason City to Kelso (Washington) | 1,465.47 mi (2,358.44 km) |
| Mason City to Kemp Mill (Maryland) | 887.21 mi (1,427.83 km) |
| Mason City to Ken Caryl (Colorado) | 664.56 mi (1,069.51 km) |
| Mason City to Kendale Lakes (Florida) | 1,404.60 mi (2,260.49 km) |
| Mason City to Kendall (Florida) | 1,408.46 mi (2,266.70 km) |
| Mason City to Kendall Park (New Jersey) | 976.47 mi (1,571.47 km) |
| Mason City to Kendall West (Florida) | 1,403.80 mi (2,259.20 km) |
| Mason City to Kenmore (New York) | 722.60 mi (1,162.91 km) |
| Mason City to Kenmore (Washington) | 1,434.44 mi (2,308.51 km) |
| Mason City to Kenner (Louisiana) | 922.15 mi (1,484.06 km) |
| Mason City to Kennesaw (Georgia) | 781.44 mi (1,257.60 km) |
| Mason City to Kennett (Missouri) | 505.77 mi (813.96 km) |
